# Why? 한국사 vs Flash

The clearest difference is in-app purchases: Flash at none against Why? 한국사's 13. Why? 한국사's advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Why? 한국사 sells 13 one-off in-app purchases. Flash asks for nothing beyond the download.

Why? 한국사 ships an update every 5 weeks, Flash every 3 months. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Why? 한국사 | Flash |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/why/id579871789/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 37 MB | 29 MB |
| Requires iOS | **6.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [(주)예림당](https://appshunter.io/developer/565049166) | [yeeun seo](https://appshunter.io/developer/1634215603) |

## What reviewers say

### Why? 한국사

[App page](https://appshunter.io/ios/app/why/id579871789)

This app offers an engaging way for children to learn Korean history through interactive e-books. It combines storytelling, comics, and educational features like timelines and quizzes to make history accessible and enjoyable for young learners.

**Highlights:** Interactive e-books, Comic-style learning, Timelines, Historical figure profiles, Curriculum-linked quizzes, Interactive maps, Item collection for motivation

**Features:** macOS Compatibility

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 나라의 시작 | $5.99 | one-time |
| 삼국의 경쟁 | $5.99 | one-time |
| 고려시대 | $5.99 | one-time |
| 조선전기 | $5.99 | one-time |
| 조선후기 | $5.99 | one-time |
| 왕자와 공주 | $5.99 | one-time |
| 신분과 직업 | $5.99 | one-time |
| 왕비 이야기 | $5.99 | one-time |
| 우정과 경쟁 | $5.99 | one-time |
| 암행어사 | $5.99 | one-time |
| 항일 독립운동 | $5.99 | one-time |
| 상도와 경제 | $5.99 | one-time |
| Why? 한국사 1권~31권 | $149.99 | one-time |


### Flash

[App page](https://appshunter.io/ios/app/flash-mental-math/id1634215601)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Why? 한국사 free?

Why? 한국사 is free to download, with in-app purchases available.

### Is Flash free?

Flash is free to download, with no in-app purchases.

### Do Why? 한국사 or Flash have ads?

Flash shows ads; Why? 한국사 does not.

### Which is updated more often, Why? 한국사 or Flash?

Why? 한국사 ships an update every 5 weeks, and Flash every 3 months. Most recently, Why? 한국사 was updated on October 6, 2026 and Flash on October 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*